She went on: "I definitely have days where I say 'Why me?' And then I go 'Well, why not me? Who else? Who else besides me deserves this? None of us do'.

"I would say that my first reaction is always concern about how am I going to tell my mom, my husband."

Asked how she was handling the fear of living with stage IV cancer, Doherty, who starred as witch Prue Halliwell on the first three seasons of Charmed between 1998-2001, replied: "I don't know. I mean, I'm petrified. I'm pretty scared.

"My mum is a ridiculously strong, corageous human being - and so is my husband, and I worry about him."

The actress added: "Life doesn't end the moment we get that diagnosis - we still have some living to do."